3180641680 has 20 divisors (see below), whose sum is σ = 7394992092. Its totient is φ = 1272256640.

The previous prime is 3180641677. The next prime is 3180641689. The reversal of 3180641680 is 861460813.

It can be written as a sum of positive squares in 2 ways, for example, as 1364859136 + 1815782544 = 36944^2 + 42612^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (3180641689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19878931 + ... + 19879090.

Almost surely, 2^3180641680 is an apocalyptic number.

It is an amenable number.

3180641680 is an abundant number, since it is smaller than the sum of its proper divisors (4214350412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3180641680 is a wasteful number, since it uses less digits than its factorization.

3180641680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39758034 (or 39758028 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 3180641680 is about 56397.1779435815. The cubic root of 3180641680 is about 1470.6350596491.

The spelling of 3180641680 in words is "three billion, one hundred eighty million, six hundred forty-one thousand, six hundred eighty".